384 CLASS XVI. 



is produced on each side into a lamina extending above the head ; the bill 

 and legs are greenish grey. The male is white above, black below ; the 

 female is greyish brown. This bird sometimes migrates from the north in 

 cold seasons to our coasts ; it is celebrated for its valuable down, which is 

 chiefly collected from the nests covered with it on the inside. The seeking 

 of these nests, which are found on high rocks, is connected with great 

 difficulty and danger. 



Harelda Leach. 



Sp. Fulix glacialis, Anas glacialis L., Buff. PI. enl. 1008, Naum. Taf. 319; 

 the ice-duck, long-tailed Hareld, lives in the high north and is occasionally 

 seen on our coasts in winter. 



Clancjula Leach. 



Sp. Ftdix clangula, Anas clangula L., Buff. PL enl. 802 ; the golden-eyed 

 gar rot. 



Fuligula Stephens. 



Sp. Fulix cristata, Anas fuligula L., Buff. PI. enl. loox, male adult (PI. 

 1007, young of one year), Naumann, Taf. 310, the red-crested pochard, le 

 morillon. 



Note. — For other sub-genera, here omitted, see Grat 1. 1. The Anates 

 of this division, intermediate between the Mergi and the remaining Anates, 

 better divers than the rest, inhabit prmcipally the shores of the sea. 



Anas L. (excl. many species). Bill with margins lamelloso- 

 dentate. Nostrils placed in the ridge of bill towards the base. 

 Hallux simple. Tarsi scutellate anteriorly, reticulate at the sides, 

 with scales hexagonal or oblong. 



Anas Boschas L., Buff. PL enl. 7j6, 777, Lesson Ornith., PI. 118, fig. 

 I ; the wild-duck, very common in the north of Europe and also in North 

 America ; most of the races of tame ducks are derived from this species ; — 

 Anastadorna L., Buff. PL enl. 53, Naum. Taf. 298 ; the shieldrake; — Anas 

 querquedula L,, Buff. PL enl. 946, Naum. Taf. 303; ilas garganey, la 

 sarcelle; — Anas crecca L., BuFP. PL enl. 947, Naum. Taf. 304; the 

 teal, &c. 



As exotic species we may notice Anas sponsa L., Buff. PL enl. 980, 

 981, the Carolina diicJc from North America; — Anas galericulata L., Buff. 

 PL enl. 805, 806, from China, Japan, &c. 



Sub-genera: Cairina Flem., Mcdacorhynchus Swains., Spatula 

 Boie, Chaulelasmus Gray, Pterocyanea Bonap., Querquedula Steph., 

 Anas Gray, {Boschas Swains.), Dafila Leach, Tadorna Leach, 

 Dendrocygna Swains. 



